Vibratory Conveyors

Posted on December 14th, 2016 by vapro

Triple/S Dynamics offers a complete line of traditional pitch-action style vibrating conveyors for light or extreme duty applications.

Vibratory conveyors use an angular pitch along with a controlled throw distance from the neutral rest position to propel product forward in the conveyor trough. The pitch of this action as well as the throw distance can be designed to suit a variety of applications.

Vibratory conveyors are used for stratifying products for screening applications, classification of products by size, fluidizing products for either drying or cooling applications, spreading products for uniform distribution transfer applications from different sized process outlets to downstream inlets, removing excess moisture from products, promoting leveling in product packing vessels, elevating products between process points or just general point to point conveying.

 

Feeders

Brute Force Vibratory Feeder

The simplest of the vibrating conveyors is the feeder style – a brute force style conveyor that does not require tuning and has virtually no external moving parts. Triple/S Dynamics offers a line of brute force style vibratory feeders for both sanitary and industrial applications.

General uses are for controlled feeding from a storage vessel mounted above the unit and trough lengths are typically 12 feet or less. Trough widths can range from 4 inches wide to several feet wide. Sizes are determined for each specific application.

This type of vibratory conveyor uses dual eccentric motors attached to a conveying trough. These motors are attached to the trough at a determined pitch angle and in parallel to allow only allow trough motion in the conveying direction. The troughs are supported using coil spring isolators to reduce any vibration transmission into the supports for the conveyor.

Using a variable frequency drive to adjust the speed of the eccentric motors, the velocity of the product flowing through the conveyor trough can be controlled to meter the amount of product that is fed to the next destination. The desired maximum throw of the conveyor can be adjusted by setting the eccentric weight force on the motors. This offers the user the ability to control the feed rate from overhead bins or hoppers into their process line. Flow rates can be adjusted from 0 to 60 plus feet per minute by either manual or automated motor control.

The simplicity of construction and operation make these conveyors not only safe, dependable, and economical, but extremely sanitary as well. Minimal cracks and crevices to harbor dirt as well as open construction methods for ease of cleaning. Typical sealed exciter motors are lubed for life. Units only require a periodic inspection to make sure they are operating within design specifications.

Pan materials can range from stainless steel sheet metal to heavy abrasion resistant carbon steel plate construction for abrasive demanding applications. We also offer a wide range of trough configurations for your specific application. From converging your products into a narrower process line or spreading them out over a wider process line, we can help you achieve your goals. This style of conveyor can also be configured into a shaking table configuration for leveling out product in containers prior to sealing.

These brute force feeder style conveyors are supported using coil spring isolators to reduce any residual vibration into the surrounding support structure. They can be suspended from above or below depending upon your unique requirements. They can also be declined or inclined to meet your production goals.

Unbalanced

Unbalanced vibrating conveyors are a near resonant frequency style conveyor that are classified as being earth anchored. This means that the conveyor is required to be mounted securely to a robust structure, typically a customer’s concrete slab of adequate thickness that can absorb the reaction forces that are created from the dynamic motion of the conveyor trough.

The trough is mounted to the anchored frame using a number of springs, typically fiberglass or coil, and driven using a belt driven, shaft mounted eccentric drive connection to the conveyor trough. Conveyors are tuned with the number of springs to run at a specific speed and the eccentric drive connection controls the amount of throw. An elastomeric coupling between the eccentric and the trough help to reduce the power requirements to run the conveyor as well as protect the trough connection from excessive stresses that could induce failure.

Unbalanced vibratory conveyors can be in excess of 100 feet in length if adequate mounting structure is available. These units are useful for screening, classifying, fluidizing and de-watering.

Maintenance requirements on this type of conveyor are periodic bearing lubrication, belt inspection and overall unit inspection.

Unbalanced vibratory conveyors are typically used for industrial applications.

Base Balanced

Base balanced vibrating conveyors are a near resonant frequency style conveyor that have a greater mass frame that is isolated from the customer’s main support structure. This allows the conveyor to be mounted on less robust structures than the unbalanced type. The heavier frame dampens the reaction forces that are created from the dynamic motion of the conveyor trough. The reduced motion of the conveyor frame is then isolated from the surrounding structure.

The trough is mounted to the frame using a number of springs, typically fiberglass or coil, and driven using a belt driven, shaft mounted eccentric drive connection to the conveyor trough. Conveyors are tuned with the number of springs to run at a specific speed and the eccentric drive connection controls the amount of throw. An elastomeric coupling between the eccentric and the trough help to reduce the power requirements to run the conveyor as well as protect the trough connection from excessive stresses that could induce failure.

Base balanced vibratory conveyors are generally limited to about 40 feet in length due to frame resonant frequencies in greater lengths. These units are useful for screening, classifying, fluidizing and de-watering.

Maintenance requirements on this type of conveyor are periodic bearing lubrication, belt inspection and overall unit inspection.

Base balanced vibratory conveyors are used for both sanitary and industrial applications.

Tex Flex Excited Base

Tex-Flex Vibratory Conveyor


The Tex Flex Vibratory Conveyor is a unique offering by Triple/S in that there is no direct physical connection between the conveyor drive and the pan. Pan motion is created as a result of inducing a small controlled vibration into the base frame near resonant frequency of the pan support spring system. This vibration causes the conveyor pan to move the designed distance (or stroke) required for the application. This creates a low energy (or horsepower) requirement for operation. This also removes any adverse forces from being induced into the conveyor pan in a localized area. The forces are dispersed equally over the length of the conveyor pan and the low stress levels reduce the likelihood of any pan fractures occurring. The small amount of frame vibration is easily isolated from the surrounding support structure.

These units differ from the base balanced units in that they do not have a physical pushing drive connection between the frame and trough. Single or dual eccentric motors attached to the base frame shake the base frame slightly at a given frequency (frame motion is much less than the base balanced style conveyor) which in turn causes the conveyor trough to move. Tuning and motor eccentric force settings control the maximum amount of throw of the conveyor trough. Use of a variable frequency drive is recommended for this style conveyor and allows product flow control.

Excited base vibratory conveyors are generally limited to about 30 feet in length due to frame resonant frequencies in greater lengths. These units are useful for screening, classifying, fluidizing and de-watering.

Power requirements to operate this style of conveyor are low (most under 1 horsepower total). The noise level of these conveyors operating is extremely low

The removal of the physical drive connection at the conveyor pan also removes the requirement for external bearings, belts, connectors and guarding requirements as well. This greatly reduces the amount of maintenance required. The motors are mostly sealed for life and require no periodic lubrications. This also creates a more sanitary environment for you processing lines. All that is required is periodic visual inspections to ensure the equipment is operating within the appropriate design guidelines.

The Tex Flex is offered with steeper spring angles appropriate for stratifying the conveyed materials for screening operations as we have here, or lower spring angles for straight conveying or distribution applications. Typical standard product velocities are 40 to 50 feet per minute. Triple/S Dynamics also offers product testing in its controlled laboratory settings to make sure you get what you require for your specific conveying application.

The formed frame members and sealed exciter motors on the Tex Flex Vibratory Conveyor are in compliance with sanitary process applications. This feature also creates a more open and accessible construction method for time required between cleaning cycles.

Excited base vibratory conveyors are used for both sanitary and industrial applications.

Dynamically Balanced

Dynamically balanced vibrating conveyors are a near resonant frequency style conveyor that have an equal mass operating This allows the conveyor to be mounted on less robust structures than the unbalanced type. The heavier frame dampens the reaction forces that are created from the dynamic motion of the conveyor trough. The reduced motion of the conveyor frame is then isolated from the surrounding structure.

The trough is mounted to the frame using a number of springs, typically fiberglass or coil, and driven using a belt driven, shaft mounted eccentric drive connection to the conveyor trough. Conveyors are tuned with the number of springs to run at a specific speed and the eccentric drive connection controls the amount of throw. An elastomeric coupling between the eccentric and the trough help to reduce the power requirements to run the conveyor as well as protect the trough connection from excessive stresses that could induce failure.

Base balanced vibratory conveyors are generally limited to about 40 feet in length due to frame resonant frequencies in greater lengths. These units are useful for screening, classifying, fluidizing and de-watering.

Maintenance requirements on this type of conveyor are periodic bearing lubrication, belt inspection and overall unit inspection.

Base balanced vibratory conveyors are used for both sanitary and industrial applications.

Options

GATES – SANITARY OR INDUSTRIAL VERSIONS AVAILABLE

ECO-SLIDE GATE

The Triple/S Eco-Slide Gate was developed when a major food processor approached Triple/S Dynamics with the problem of cleaning and maintaining the existing gates on their conveyors. They wanted the ability of the removal of the gate to be tool-less, less time for disassembly and reassembly during the sanitation process between plant production cycles. The Triple/S design team went to work to develop a new low cost gate system to meet the customer’s requirements. It took just one day to retrofit the new gates into the existing conveyors. Tool-less and easily removable for sanitation affording the customer less downtime, this new gate is a great example of why collaborating with the customer’s needs works.

PLUG GATE

The Plug Gate is designed to meet maximum sanitation and protection of the product stream from contamination and features all welded stainless steel construction with no fasteners in the product stream. The Plug Gate is designed for ease of cleaning.

SCREENS – SANITARY OR INDUSTRIAL VERSIONS AVAILABLE

WIRE MESH

Wire mesh screens are lightweight and easily changed out. Stretcher bars are used along the crimped edges to pull the screens taught. Optional ball decks can be supplied to keep finer mesh screens from blinding over.

PERFORATED

Perforated screens can be manufactured with custom openings (square, slotted, round) as well as from a variety of materials. Panels can be bolted in or clamped in place for easy removal.

GRIZZLY

For heavy duty screening applications, dewatering and non-blinding, grizzly screens are a good choice. From stainless tri-wire to hardened round bars, we can supply what you require.

COVERS- SANITARY OR INDUSTRIAL VERSIONS AVAILABLE

STATIONARY COVERS

Stationary pan covers are available in a variety of materials, configurations and finishes. Access doors, aspiration points and viewports are available. For custom cover options, please contact us.

PAN MOUNTED COVERS

Pan mounted covers are available in a variety of materials, configurations and finishes. Access doors, aspiration points and viewports are available. Clamped, bolted or sealed.

For custom cover options, please contact us.

Vibratory Conveyors Resources

Videos

Brute Force Vibratory Feeder

Tex-Flex Vibratory Conveyor

Mixed Nuts

Snack Food

Articles / Case Studies

Literature

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